libnfs, nfv4 and Kerberos

[jfen...@clearskydata.com]

I've been working with libnfs' NFSv4 support, and it has been working well so far, but the restriction of only working on servers that support sec=sys is beginning frustrate me.  Is anyone working on enhancing libnfs to support sec=krb5* servers?  I looked at using libgssrpc but I promptly hit a stumbling block in that it requires a real CLIENT structure, and libnfs does typedef void CLIENT...